Question 7 If b = 0, c <0, is it true that the roots of x2 + bx + c = 0 are numerically equal and opposite in sign ? Justify your answer.
If f(x)=∣∣ ∣∣0x−ax−bx+a0x−cx+bx+c0∣∣ ∣∣, which of the following is true?
(a) f(a) = 0 (b) f(b) = 0 (c) f(0) = 0 (d) f(1) = 0